title: Evaluation of the effectiveness of arsenic screening promotion in private wells: a quasi-experimental study.
abstract: The Eastern Townships (ETR) is a region in Québec (Canada) where the soil is naturally rich in arsenic (As). About a third of the people in the ETR obtain their water from a private well. A quasi-experimental design was used to compare two campaigns designed to promote As screening in well water: a mass-media campaign (MMC) followed or not by a community-based intervention (CBI). The MMC is based on a press release issued for the ETR, along with a leaflet on As made available on the Internet, and in strategic places. The CBI, formulated according to the factors of the Precede-Proceed model, was aimed at mobilizing local authorities and small media. It targets only one municipality; the intervention community (IC). Using a separate pre-post samples design, two population-based cross-sectional (pre-CBI and post-CBI) surveys were conducted by phone at 6-month intervals, by means of random samples. The samples counted, for the IC and the ETR, respectively, 87 and 156 well owners in pre-CBI, and 106 and 190 in post-CBI. The results in post-CBI showed that the proportion of well owners who had their water test increased by four times in the IC after (16% p = 0.004). When adjusting for age and gender among all the post-CBI respondents, As screening is related with intervention status (exposed to MMC and CBI; p ≤ 0.001) and on previous microbiological water analysis behavior (p ≤ 0.05), but is not related to knowledge. This study demonstrates the superiority of a community-based campaign over a MMC when environmental health is concerned.
authors.affiliation: Universite´ de Sherbrooke, Que´bec, Canada.
authors.forename: Jolianne
authors.initials: J
authors.lastname: Renaud
authors.forename: Fabien
authors.initials: F
authors.lastname: Gagnon
authors.forename: Cécile
authors.initials: C
authors.lastname: Michaud
authors.forename: Sonia
authors.initials: S
authors.lastname: Boivin
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001151:Arsenic / Q000302:isolation & purification*; D020261:Arsenic Poisoning / Q000517:prevention & control; D003430:Cross-Sectional Studies; D004782:Environmental Health; D004784:Environmental Monitoring / Q000706:statistics & numerical data; D005260:Female; D006293:Health Promotion / Q000379:methods*; D006801:Humans; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D011792:Quebec; D060986:Water Wells / Q000737:chemistry*; D055815:Young Adult
chemical_list: D001151:Arsenic